I can reproduce this (no result returned) even with a simple WScript.Echo "HelloWorld". I created engineering ticket COBRA-23701 for the issue.
As a workaround, you can use:
WScript.stdout.WriteLine strDisplayName & vbTab & strVersion
WScript.Echo strDisplayName & vbTab & strVersion
Just a quick note to try this on a 7.2.1 agent, as this should be resolved here with that version.